Plate-valve.



E. M. IVENS. n

PLATE VALVEK APPLlcAmN mw Fa. a. i915,

memedscpf. 172, 1916.

3 SHEETSSHEET l.

E. IVI. IVENS.

PLATE v/ILvE',

APPLICATION FILED FEB. 8, 1916.

Patterned wept 12, 1916.

3 SHEETS-SHEET 2.

www@

Emu.,

E. IVI. IVEIIS.

PLATE VALVE.

APPLICATION FILED FEB. s, ISIS.

3 SHEETS-SHEET 3.

thereof.

E'JDMUND MASTERS IVENS, NEW ORLEANS, LOUISIANA.

PLATE-VALVF Specification of Letters Patent.

)Patented Sept. 12, i916.

Application filed February 8, 1916. Serial No. 77,076.

To all whom 'if 12mg/ (lancera lie it known that '1, EDMUND M. lvnNs, residing at New Orleans, in the parish of Orleans and State of Louisiana, have invented certain new and useiful YImprovements in Plate-Valves, of which the following is a specification.

AThis invention has reference toimprovements in that type o'l" valves used in the compressing cylinders of air, gas and ammonia compressors, blowing engines` and dry vacuum pumps, and my invention primarily has 'for its object to provide a simple, economical and stable construction of valve of the lgeneral type stated, that may be used for either the inlet or the discharge, by simply reversing the position.

Another object of my invention is to pro-v vide a plate valve having the cooperating parts termed for eili'ecting a gradual seat-- 111g of the valve i i'rom the center' to the ends to thereby overcome {lutter-ing and destructive hammering or clatter.

Again, my invention r-.oinprehends an improved construction o plate valve, having a large port area land operating under a low litt, and ot' sufficient lightness to reduce the resistance of the passage o the air or gas to the minimum, and which is also operable under such quick closure action that revents losses due to return of gas or air.

With further `objects in'` view that will' hereinafter appear, my invention is an improved plate valve that embodies the peculiar construction and parts hereinafter described in detail, specifically Jointed out in the appended claims and illustrated in the, accompanying. drawings, in which:

Figure 1 is a top plan vien1 of the valve plate proper.' Fig. 2 is an edge elevation thereof. Fig'. 3 is a top plan view of the valve cover or keeper. Fig. Il is an elevation Figs. g5 and 6 are respectively cross sections on the lines 5-5 and 6-6 on Fig. 3. Fig. 7. is a top plan of the valveseat. Fig. 8 is a view said seat. Figs. 9 and 10-\ are respectively cross sections on the lines 2)9 and 10-10 on Fig. 7. Fig. l1 is a cross section of the complete valve taken on the line 11-11 on li1 ig. 13, the means for holding the valve in its misition. he cylin( being shown as mperatiiy i' connected with the said valve.

1. lf2 if' a levation et the valve, look-Y irection ol the ari vv c on Fig.

novel arrangement oi" the.

onto the cylinder 1. The body portion also includes anv axial hub for receivi g the,

of the bottomside of thev Fig. 13 is a cross section of the valve on the line 13-13 on Fig. 11. Fig. 14; is a cross section of a modified torm of my valve mechanism. Fig. 15 is a lan view ot' the form of valve plate embodied in the moditied construction. Fig. 16 is a sectional velevation of a compressor With my valve mechanism operatively applied.

In the drawings, 1 indicates a portion of a Working cylinder in which my improved plate valve mechanism is operatively applied, and 2 indicates a portion of the Working piston.

3 designates the valve properwhich in my construction is in the 4nature of a thin clock spring metal plate andthe said plate has a series ol serrated uniformly spaced transversely disposed ribs separated by parallel slots7 the ribs forming closure members 1 for closing the ports 40 in the valve seat, best shown in Fig. 13, and the said plate also includes solid bridge portion-s 5 at the diametrically opposite rims that serve as closure or cover members for supplemental rim ports 41 at diametrically opposite points,

. made thinner at the middle (as at 6) than at the ends to allow each portion of the valve plate to conform to the inclined seat surfaces provided therefor as will presently be further explained.

As is best shown in liig. 7 the body 16 of the valve seat includes a solid bridge-like portion 17 that extends across and separates the two sets oi ports or iluid passages lll-#10, and the outer peripheral edge of the body has a groove 18 to form a gasket joint, or it may be grooved for a proper fitting 16 clamp or binding bolt, and the two s ts of passages or ports eO-tl have their edges rounded to permit a maximum free access and egress of the air or gas With minimum friction losses.

7 designates, what l term the valve cover or keeper, andthe same is shown in detail in lllligs. 3, fl, 5 and 6, and in practice, the said cover is preferably ot semi-steel and des an atrial opening tor receiving the bolt t) and at iiiametrically opposite 'has pendent ,mrtious i() that serve as abutments for the free ends of the valve plate, as a Whole, and to limit the distance between the valve cover and the valve seat ior'determining the lift of the valve. The cove/'r 7 includes a bridge portion 70 that extends transversely of the ports in the valve seat and yin the under face thereof it has transverse guide grooves 12, one for each rib or closure memberpfthe valve and the said grooves 12, when the parts that consti tute my complete valve structure are assembled, oppose the like guide grooves .20 in the bridge portion 17 of the valve seat 16. By forming the opposing bridge portions of the cover 7 and the seat 16 with guide grooves, as stated, the valve plate, as a` whole, is guided to the valve seat the same as is each individual rib portion of such valve.

' The valve seat, as shown, is on a gradual and uniform incline downwardly from thev axial aperture to the peripheral edge thereof, vas is clearly illustrated in 11 which shows that the guide grooves in the br1dge portion of the seat 16 are tapered on an inclinevthe same as the incline of the seat and that the cross guides 12 in the bridge portion of the cover are inclined upwardly with the degree of incline the same as that of the incline of the guide grooves 2O in the valve seat.

By reason of forming the opposing sets of guide grooves 12-20 in the manner stated and shown causes the cover or keeper to engage the valve plate and clamp it down onto the valve seat at the center thereof only, it being understood that the valve plate is thus clamped between the bridge portions of the cover and the seat the full width thereof, see Fig. 13, and since the depth of the guide grooves 12 and 20 gradually increase toward the outer edges of the said bridge portions,

- it follows, that in operation the body of the valve is free to lift from its central clamped point to the outer edge and at the same, time maintain a relatively flat condition at points between the peripheral edge and central fixedly held end, it being. apparent that in moving to the seat the valve is guided as a Whole as the rib portions, from the center to the outer edge, are successively guided to their seats.

14-14 designate a number of spiral springs, four being shown that seat within sockets 15 in the valve cover and which rest against the rim portion of the valve and serve to bend the said plate down onto the inclinedvalve seat, and it should be stated that the tension of the several springs 14, 1n practice, is only slightly greater' than the resistance offered by the bending valve plate.

The rib portions of the valve plate are made thinner at the middle than at the ends, as before stated, toy provide for permitting the ribs to readily conform to their respective inclined groove seats before mentioned.

22 designate dowel pins that project from the hub portion of the valve seat adapted for passing through the apertures 23 in the valve plate and for entering sockets 24 in the cover plate and thereby serve to hold the valve plate against lateral displacement. As the valve seat is inclined as stated, the tension of the bent valve will serve to assist in the lifting, since the only resistance offered to the passing of the elastic Huid will be the difference between the said tension and the coil spring tension, plus the resistance offered by the unbalanced seating area. While I prefer to use an inclined valve seat, such shape of seat is not essential to the successful operation of my valve. The seat may be flat and when thus, at least two of the coiled springs 14 may be dispensed with. The edges of the ports are slightly raised, as shown, lto obtain tight seating and reduce the unbalanced area of seating.

Figs. 14 and 15 illustrate a slightly mod- 'fied form of my valve mechanism and the same includes a valve plate designed as shown in detail in Fig. 15, which shows the ribs 45 held together at the middle of the plate instead of at the outer ends, as in the other form of valve shown in Fig. 1. In the said modified form, the valve seat structure and the valve keeper remain the same, except that the seat is without the circular ports 41 that appear in the other valve structure stated. The face of the seat in the modified form is iiat and the spiral springs 14 found in the other valve devices described are eliminated.

The manner in which my valve mechameans for holding thevalve to its position.

'for cooperation with the working cylinder and the piston of the compressor. As shown, the means for holding the valve comprises a screw shank F that operates through the threaded passage in a cover plate :n whose upper end terminates in a wrench head l), and carries a lock nut C. The lower end of shank F terminates in a socket f formed with an internal thread f for receiving a centrally apertured threaded plug B. A collar A is held within the socket f by the plug B and it is attached tothe upper end of a plunger rod E, by a left hand thread connection e and a countersunk set screw c', as shown. Lower end of the rod E forms the binding post 9 which includes a bead 90 at the lower end that engages the under side of the hub of the valve seat, and a threaded portion 91.to receive lock and jam v, nuts 92-92 that hold the valve members ing the shank head D clockwise, the valve is forced straight ahead into its proper position in the valve chamber that communicates with the working cylinder (see Fig. 1G) or by turning the shank head D contraclockwise the valve can be readily d awn straightway outward, it being understood that theI valve and the link rod do not rotate either in placing or removing the valve, the result, when operating the shank head D, as stated, vbeing a uniform and tight seating ot thel valye at the shoulders rtf-'n andv as easy and qri'ick Withdrawal of said valve' when occasion demands. The latter operation (after tails of structure, it is understood that the jee said details may he modified or varied to suit the specific requirements in the practical application of my valve, Without departing from the scope oit the invention set out in the claims.

My construction oi' valve, hyreason of its sensitive setting, is adapted for working with great rapidity and positiveness of' action and without danger of injurious noises or shocks.'

iVhat I claim is: l. ln a valve structure, a valve lseat having a set of ports arranged 1n gridelilre "to-rin and including a transverse member havingy -said sets ot' port slots, a single valve disk of grid-like form for closing all of said slots, means for securingr said disk on said valve seat along said transverse partition where by each half ,of said disli may have independent tiexur 3. ln a valve mechanism for fluid comH pressors comprising a valve seat having two sets ot' parallel ports' divided by abridge portion, the said bridge portion having' transverse guide grooves in its upper .tacethat aline the two sets ot ports and a cene trally apertured hub, a spring plate having alternate slots and ribs and a. central aperture, the 'ribs forming closure members for fitting over '-thetwo of ports, a cover including an ,apcrtnred huh and a bridgeV portion for fitting over the hub and the bridge portion of the valve seat, the said cover bridge portion, having transverse guide grooves that register with like grooves in the valve seat, the ribs oi the valve plate itting between the two sets of guide grooves and a clamp bolt connection mounted in the hubs of the valve seat and the cover.

4f. ln a valve mechanism for iuid compressors comprising a valve seat having two sets of parallel ports divided by a bridge portion, the said bridge portion having transverse guide grooves in its upper tace that aline the two sets ot ports and a cen- 'trally apertui'ed hub, a spring plate having alternate slots and ribs and 'a central aperture,`the ribs vforming closure members for fitting over the two sets of ports, a cover including an apertured hub and a bridge p0rtion for fitting over the hub and the bridge portionlot lthe valve seat, the said cover bridge portion having transverse guide grooves that register with like grooves in the valve seat, the ribs of the valve plate lijtting between the two of guide grooves, a clamplmlt'connection mounted in the hubs of the valve seat and the cover.l and means for securing the valve plate against lateral displacement.

nln a valve mechanism tor (luid compressors,comprising a valve seat having two sets' of parallel ports divided by a bridge portion, the said bridge 'portion having transverse guidey grooves in its upper tace that aline the two sets ot' ports and a centrally apertured huh, a spring plate having alternate lslots and ribs and a central aperture, the ribs forming' closure members for litting over the two sets oi ports, a cover including an apertured hub and a bridge por tion for fitting over the hub and the bridge portion ot' the valve seat, the said cover bridge portion having trauf'sverse guide grooves that register wlth like grooves in the valve seat, the ribs of the valve plate iitting between the two sets ot guide grooves, a clamp bolt connection mounted in the hubs ot' the valve seat and the cover, the said cover including stop portions adapted for being engaged by the opposite outer portions of the valve plato to limit the lift of said plate.

il. ln a valve mechanism ot the character stated, a centrally apertured valve seat, the said seat having two distinct sets of air ports and a bridge portion that extends transversely ot' and between the two of ports, a centrally apertured spring plate mounted over the valve seat, said plate having alternate slots and ribs., the latter torming closures for the tw ports in the seat, a ccntrallv apertiiru cove" including a transverse bridge por; on tor ittirr over the bridge portion ot theI valve .f he opposing faces oi the midgep ot' the valve and the cover having transverse guide grooves that aline the ports in the valve seat and receive the ribs of said grooves being shaped whereby to clamp the valve plate at the mid line only and means for clamping thecover onto the valve plate and the valve seat.

7 In a valve mechanism of the character stated, a centrally a-pertnred seat having two sets ot' parallel fluid ports, and a bridge portion that extends transversely of and between the two sets of ports, the valve engaging face of the said seat being downwardly inclined in opposite directions from the bridge portion, a spring grid-like plate valve mounted over the valveseat and having a central aperture, the transverse ribs of the said plate extending entirely across and forming closures for the two sets of ports in `the Evalve seat, a centrally apertured cover that includes a bridge portion for opposing the bridge portion o the valve seat, said cover and valve seat bridge portions having registering transverse guide grooves that aline the opposite sets of ports `1n the valve seat, the `grooves in the valve seat being inclined in the plane of the valve seat molines, the grooves 1n the bridge portion of the cover being inclined upwardly,

the degree of inclination thereof being like that of the incline of the valve seat guide grooves whereby to grip thev valve plate along a transverse mid line, valve plate fitting the said opposing grooves and means for clamping the cover, the plate and the said seat together.

8. In a valve mechanism ot the character stated, a centrally apertured seat having two setsof parallel ports, and a bridge por-. tion that extends transversely of and be tween the two sets of ports, the valve engaging face ot the said seat being downwardly inclined in opposite directions from the bridge portion, a spring grid-like plate valve mounted over the valve seat and having a central aperture, the transverse ribs of the said plate extending ,entirely across and forming closures for the two sets of portsin the valve seat, a centrally apertured cover that includes a bridge portion for opposing the bridgeportion of the valve seat,

said cover and valve seat bridge portions having 'registering transverse Guide grooves that aline the opposite sets o? ports in the valve seat, the grooves in the valve seat being inclined in the plane of the valve seat inclines, the grooves 1n the bridgel portion of the cover being inclined upwardly, the

degree of inclination thereof being like that of the incline-ofthe valve seat guidegrooves whereby to grip the valve plate along a transverse mid line, the ribs of the valve plate fitting the said opposing grooves. means for clamping the cover, the plate and the Said seat together, the said cover in` the valve plate, the

the ribs of the 'f cover that engage the valve cluding stop portions that fit over the opposite outer ends of the valve seat to limit the lift of the valve plate.

9. In a valve mechanism of the character stated, a centrally apertured seat having two sets of parallel ports, and a bridge portion that extends transversely of and between the two sets of ports, the valve engaging tace of the said seat being downwardly inclined in opposite directions from the bridge portion, a spring grid-like plate valve mounted over the valve seat and having a central aperture, the transverse ribs of the said plate extending entirely across and forming closures for the two sets of ports in the valve seat, a centrally apertured cover that includes a bridge portion for opposing the bridge portion of the valve seat, said cover and valve seat bridge portions having registering transverse guide grooves that aline the opposite sets of ports the grooves 'in the valve seat being inclined in the plane of the valve seat inclines, the grooves in the bridgevportion ofthe covering being inclined upwardly, the degree of inclination thereof being like that of the incline of the valve seat guide grooves whereby to grip the valve plate along al transverse midline, the ribs of the valve plate fitting the said opposing grooves, means for clamping the cover, the plate and said seat together, the said cover including stop` portions that t over the opposite outer ends of the valve seat to limit the lift of the lvalve plate, and springs mounted on the plate to bend the valve plate down onto the inclined surfaces of the valve seat.

10. In a valve mechanism for compressors of the character described, and which' includes a working cylinder having a valve chamber formed with a seat, and a cover for closing said chamber; of a valve scat and valve movable in the chamber to closeagainst the seat in the chamber, means for moving the valve seat and valve within the chamber to the operative or inoperative positions, said means comprising a threaded shankthat operates through the valve chamber cover, a rod that extends from the valve and a swivel connection that joins the rod and the threaded shank.

11.- In a valve mechanism for compressors of the character described, and which includes a working cylinder having a valve chamber formed with a seat, and a cover 'for closing said chamber; of a valve seat and valve movable in the chamber to close against the seatin the chamber, means for moving the valve seat and valve within the chamber to the operative or inoperative positions, saidV means comprising a threaded shank that operates through the valve chamber cover, a rod that extends from the valve, a swivelconnection thatjoins the rod and the threaded shank, said connection comprising a socket on the threaded shank, an apel'tured plug `that fits in and forms a closure for the socket and through vwhich the valve rod passes, and a disk in the socket 'Connected to the upper end of the rod.

12. In a valvemechanism for compressors of the character described, and which includes aworking cylinder having a Valve chamber formed with a seat, and a cover for closing said chamber; of a valve seat and valve movable in the chamber to close against the seat in the'chamber, means for moving the valve seat and valve within the cliainber'to the operative or inoperative p0- sitions, said means comprising a threaded Shank that operates through the valve Chamber cover, a rod that extends from the Valve, a swivel connection that joins the rod and the threaded shank, said Connection com'- prising a socket on the threaded shank, an apertured plug that lits in and forms a closure im' the socket and through which the.

valve rod passes, and a disk Within the socket joined to the rod by a left hand threaded connection.

'EDR/[UND MASTERS VENS. 

